﻿
var pJS = function (tag_id, params) {

var canvas_el = document.querySelector('#' + tag_id + ' > .particles-js-canvas-el');

/* particles.js variables with default values */
this.pJS = {
canvas: {
el: canvas_el,
w: canvas_el.offsetWidth,
h: canvas_el.offsetHeight
},
particles: {
number: {
    value: 400,
    density: {
        enable: true,
        value_area: 800
    }
},
color: {
    value: '#000'
},
shape: {
    type: 'circle',
    stroke: {
        width: 0,
        color: '#ff0000'
    },
    polygon: {
        nb_sides: 5
    },
    image: {
        src: '',
        width: 100,
        height: 100
    }
},
opacity: {
    value: 1,
    random: false,
    anim: {
        enable: false,
        speed: 2,
        opacity_min: 0,
        sync: false
    }
},
size: {
    value: 20,
    random: false,
    anim: {
        enable: false,
        speed: 20,
        size_min: 0,
        sync: false
    }
},
line_linked: {
    enable: true,
    distance: 100,
    color: '#fff',
    opacity: 1,
    width: 1
},
move: {
    enable: true,
    speed: 2,
    direction: 'none',
    random: false,
    straight: false,
    out_mode: 'out',
    bounce: false,
    attract: {
        enable: false,
        rotateX: 3000,
        rotateY: 3000
    }
},
array: []
},
interactivity: {
detect_on: 'canvas',
events: {
    onhover: {
        enable: true,
        mode: 'grab'
    },
    onclick: {
        enable: true,
        mode: 'push'
    },
    resize: true
},
modes: {
    grab: {
        distance: 100,
        line_linked: {
            opacity: 1
        }
    },
    bubble: {
        distance: 200,
        size: 80,
        duration: 0.4
    },
    repulse: {
        distance: 200,
        duration: 0.4
    },
    push: {
        particles_nb: 4
    },
    remove: {
        particles_nb: 2
    }
},
mouse: {}
},
retina_detect: false,
fn: {
interact: {},
modes: {},
vendors: {}
},
tmp: {}
};

var pJS = this.pJS;

/* params settings */
if (params) {
Object.deepExtend(pJS, params);
}

pJS.tmp.obj = {
size_value: pJS.particles.size.value,
size_anim_speed: pJS.particles.size.anim.speed,
move_speed: pJS.particles.move.speed,
line_linked_distance: pJS.particles.line_linked.distance,
line_linked_width: pJS.particles.line_linked.width,
mode_grab_distance: pJS.interactivity.modes.grab.distance,
mode_bubble_distance: pJS.interactivity.modes.bubble.distance,
mode_bubble_size: pJS.interactivity.modes.bubble.size,
mode_repulse_distance: pJS.interactivity.modes.repulse.distance
};


pJS.fn.retinaInit = function () {

if (pJS.retina_detect && window.devicePixelRatio > 1) {
pJS.canvas.pxratio = window.devicePixelRatio;
pJS.tmp.retina = true;
}
else {
pJS.canvas.pxratio = 1;
pJS.tmp.retina = false;
}

pJS.canvas.w = pJS.canvas.el.offsetWidth * pJS.canvas.pxratio;
pJS.canvas.h = pJS.canvas.el.offsetHeight * pJS.canvas.pxratio;

pJS.particles.size.value = pJS.tmp.obj.size_value * pJS.canvas.pxratio;
pJS.particles.size.anim.speed = pJS.tmp.obj.size_anim_speed * pJS.canvas.pxratio;
pJS.particles.move.speed = pJS.tmp.obj.move_speed * pJS.canvas.pxratio;
pJS.particles.line_linked.distance = pJS.tmp.obj.line_linked_distance * pJS.canvas.pxratio;
pJS.interactivity.modes.grab.distance = pJS.tmp.obj.mode_grab_distance * pJS.canvas.pxratio;
pJS.interactivity.modes.bubble.distance = pJS.tmp.obj.mode_bubble_distance * pJS.canvas.pxratio;
pJS.particles.line_linked.width = pJS.tmp.obj.line_linked_width * pJS.canvas.pxratio;
pJS.interactivity.modes.bubble.size = pJS.tmp.obj.mode_bubble_size * pJS.canvas.pxratio;
pJS.interactivity.modes.repulse.distance = pJS.tmp.obj.mode_repulse_distance * pJS.canvas.pxratio;

};



/* ---------- pJS functions - canvas ------------ */

pJS.fn.canvasInit = function () {
pJS.canvas.ctx = pJS.canvas.el.getContext('2d');
};

pJS.fn.canvasSize = function () {

pJS.canvas.el.width = pJS.canvas.w;
pJS.canvas.el.height = pJS.canvas.h;

if (pJS && pJS.interactivity.events.resize) {

window.addEventListener('resize', function () {

    pJS.canvas.w = pJS.canvas.el.offsetWidth;
    pJS.canvas.h = pJS.canvas.el.offsetHeight;

    /* resize canvas */
    if (pJS.tmp.retina) {
        pJS.canvas.w *= pJS.canvas.pxratio;
        pJS.canvas.h *= pJS.canvas.pxratio;
    }

    pJS.canvas.el.width = pJS.canvas.w;
    pJS.canvas.el.height = pJS.canvas.h;

    /* repaint canvas on anim disabled */
    if (!pJS.particles.move.enable) {
        pJS.fn.particlesEmpty();
        pJS.fn.particlesCreate();
        pJS.fn.particlesDraw();
        pJS.fn.vendors.densityAutoParticles();
    }

    /* density particles enabled */
    pJS.fn.vendors.densityAutoParticles();

});

}

};


pJS.fn.canvasPaint = function () {
pJS.canvas.ctx.fillRect(0, 0, pJS.canvas.w, pJS.canvas.h);
};

pJS.fn.canvasClear = function () {
pJS.canvas.ctx.clearRect(0, 0, pJS.canvas.w, pJS.canvas.h);
};


/* --------- pJS functions - particles ----------- */

pJS.fn.particle = function (color, opacity, position) {

/* size */
this.radius = (pJS.particles.size.random ? Math.random() : 1) * pJS.particles.size.value;
if (pJS.particles.size.anim.enable) {
this.size_status = false;
this.vs = pJS.particles.size.anim.speed / 100;
if (!pJS.particles.size.anim.sync) {
    this.vs = this.vs * Math.random();
}
}

/* position */
this.x = position ? position.x : Math.random() * pJS.canvas.w;
this.y = position ? position.y : Math.random() * pJS.canvas.h;

/* check position  - into the canvas */
if (this.x > pJS.canvas.w - this.radius * 2) this.x = this.x - this.radius;
else if (this.x < this.radius * 2) this.x = this.x + this.radius;
if (this.y > pJS.canvas.h - this.radius * 2) this.y = this.y - this.radius;
else if (this.y < this.radius * 2) this.y = this.y + this.radius;

/* check position - avoid overlap */
if (pJS.particles.move.bounce) {
pJS.fn.vendors.checkOverlap(this, position);
}

/* color */
this.color = {};
if (typeof (color.value) == 'object') {

if (color.value instanceof Array) {
    var color_selected = color.value[Math.floor(Math.random() * pJS.particles.color.value.length)];
    this.color.rgb = hexToRgb(color_selected);
} else {
    if (color.value.r != undefined && color.value.g != undefined && color.value.b != undefined) {
        this.color.rgb = {
            r: color.value.r,
            g: color.value.g,
            b: color.value.b
        }
    }
    if (color.value.h != undefined && color.value.s != undefined && color.value.l != undefined) {
        this.color.hsl = {
            h: color.value.h,
            s: color.value.s,
            l: color.value.l
        }
    }
}

}
else if (color.value == 'random') {
this.color.rgb = {
    r: (Math.floor(Math.random() * (255 - 0 + 1)) + 0),
    g: (Math.floor(Math.random() * (255 - 0 + 1)) + 0),
    b: (Math.floor(Math.random() * (255 - 0 + 1)) + 0)
}
}
else if (typeof (color.value) == 'string') {
this.color = color;
this.color.rgb = hexToRgb(this.color.value);
}

/* opacity */
this.opacity = (pJS.particles.opacity.random ? Math.random() : 1) * pJS.particles.opacity.value;
if (pJS.particles.opacity.anim.enable) {
this.opacity_status = false;
this.vo = pJS.particles.opacity.anim.speed / 100;
if (!pJS.particles.opacity.anim.sync) {
    this.vo = this.vo * Math.random();
}
}

/* animation - velocity for speed */
var velbase = {}
switch (pJS.particles.move.direction) {
case 'top':
    velbase = { x: 0, y: -1 };
    break;
case 'top-right':
    velbase = { x: 0.5, y: -0.5 };
    break;
case 'right':
    velbase = { x: 1, y: -0 };
    break;
case 'bottom-right':
    velbase = { x: 0.5, y: 0.5 };
    break;
case 'bottom':
    velbase = { x: 0, y: 1 };
    break;
case 'bottom-left':
    velbase = { x: -0.5, y: 1 };
    break;
case 'left':
    velbase = { x: -1, y: 0 };
    break;
case 'top-left':
    velbase = { x: -0.5, y: -0.5 };
    break;
default:
    velbase = { x: 0, y: 0 };
    break;
}

if (pJS.particles.move.straight) {
this.vx = velbase.x;
this.vy = velbase.y;
if (pJS.particles.move.random) {
    this.vx = this.vx * (Math.random());
    this.vy = this.vy * (Math.random());
}
} else {
this.vx = velbase.x + Math.random() - 0.5;
this.vy = velbase.y + Math.random() - 0.5;
}

// var theta = 2.0 * Math.PI * Math.random();
// this.vx = Math.cos(theta);
// this.vy = Math.sin(theta);

this.vx_i = this.vx;
this.vy_i = this.vy;



/* if shape is image */

var shape_type = pJS.particles.shape.type;
if (typeof (shape_type) == 'object') {
if (shape_type instanceof Array) {
    var shape_selected = shape_type[Math.floor(Math.random() * shape_type.length)];
    this.shape = shape_selected;
}
} else {
this.shape = shape_type;
}

if (this.shape == 'image') {
var sh = pJS.particles.shape;
this.img = {
    src: sh.image.src,
    ratio: sh.image.width / sh.image.height
}
if (!this.img.ratio) this.img.ratio = 1;
if (pJS.tmp.img_type == 'svg' && pJS.tmp.source_svg != undefined) {
    pJS.fn.vendors.createSvgImg(this);
    if (pJS.tmp.pushing) {
        this.img.loaded = false;
    }
}
}



};


pJS.fn.particle.prototype.draw = function () {

var p = this;

if (p.radius_bubble != undefined) {
var radius = p.radius_bubble;
} else {
var radius = p.radius;
}

if (p.opacity_bubble != undefined) {
var opacity = p.opacity_bubble;
} else {
var opacity = p.opacity;
}

if (p.color.rgb) {
var color_value = 'rgba(' + p.color.rgb.r + ',' + p.color.rgb.g + ',' + p.color.rgb.b + ',' + opacity + ')';
} else {
var color_value = 'hsla(' + p.color.hsl.h + ',' + p.color.hsl.s + '%,' + p.color.hsl.l + '%,' + opacity + ')';
}

pJS.canvas.ctx.fillStyle = color_value;
pJS.canvas.ctx.beginPath();

switch (p.shape) {

case 'circle':
    pJS.canvas.ctx.arc(p.x, p.y, radius, 0, Math.PI * 2, false);
    break;

case 'edge':
    pJS.canvas.ctx.rect(p.x - radius, p.y - radius, radius * 2, radius * 2);
    break;

case 'triangle':
    pJS.fn.vendors.drawShape(pJS.canvas.ctx, p.x - radius, p.y + radius / 1.66, radius * 2, 3, 2);
    break;

case 'polygon':
    pJS.fn.vendors.drawShape(
        pJS.canvas.ctx,
        p.x - radius / (pJS.particles.shape.polygon.nb_sides / 3.5), // startX
        p.y - radius / (2.66 / 3.5), // startY
        radius * 2.66 / (pJS.particles.shape.polygon.nb_sides / 3), // sideLength
        pJS.particles.shape.polygon.nb_sides, // sideCountNumerator
        1 // sideCountDenominator
    );
    break;

case 'star':
    pJS.fn.vendors.drawShape(
        pJS.canvas.ctx,
        p.x - radius * 2 / (pJS.particles.shape.polygon.nb_sides / 4), // startX
        p.y - radius / (2 * 2.66 / 3.5), // startY
        radius * 2 * 2.66 / (pJS.particles.shape.polygon.nb_sides / 3), // sideLength
        pJS.particles.shape.polygon.nb_sides, // sideCountNumerator
        2 // sideCountDenominator
    );
    break;

case 'image':

    function draw() {
        pJS.canvas.ctx.drawImage(
            img_obj,
            p.x - radius,
            p.y - radius,
            radius * 2,
            radius * 2 / p.img.ratio
        );
    }

    if (pJS.tmp.img_type == 'svg') {
        var img_obj = p.img.obj;
    } else {
        var img_obj = pJS.tmp.img_obj;
    }

    if (img_obj) {
        draw();
    }

    break;

}

pJS.canvas.ctx.closePath();

if (pJS.particles.shape.stroke.width > 0) {
pJS.canvas.ctx.strokeStyle = pJS.particles.shape.stroke.color;
pJS.canvas.ctx.lineWidth = pJS.particles.shape.stroke.width;
pJS.canvas.ctx.stroke();
}

pJS.canvas.ctx.fill();

};


pJS.fn.particlesCreate = function () {
for (var i = 0; i < pJS.particles.number.value; i++) {
pJS.particles.array.push(new pJS.fn.particle(pJS.particles.color, pJS.particles.opacity.value));
}
};

pJS.fn.particlesUpdate = function () {

for (var i = 0; i < pJS.particles.array.length; i++) {

/* the particle */
var p = pJS.particles.array[i];

// var d = ( dx = pJS.interactivity.mouse.click_pos_x - p.x ) * dx + ( dy = pJS.interactivity.mouse.click_pos_y - p.y ) * dy;
// var f = -BANG_SIZE / d;
// if ( d < BANG_SIZE ) {
//     var t = Math.atan2( dy, dx );
//     p.vx = f * Math.cos(t);
//     p.vy = f * Math.sin(t);
// }

/* move the particle */
if (pJS.particles.move.enable) {
    var ms = pJS.particles.move.speed / 2;
    p.x += p.vx * ms;
    p.y += p.vy * ms;
}

/* change opacity status */
if (pJS.particles.opacity.anim.enable) {
    if (p.opacity_status == true) {
        if (p.opacity >= pJS.particles.opacity.value) p.opacity_status = false;
        p.opacity += p.vo;
    } else {
        if (p.opacity <= pJS.particles.opacity.anim.opacity_min) p.opacity_status = true;
        p.opacity -= p.vo;
    }
    if (p.opacity < 0) p.opacity = 0;
}

/* change size */
if (pJS.particles.size.anim.enable) {
    if (p.size_status == true) {
        if (p.radius >= pJS.particles.size.value) p.size_status = false;
        p.radius += p.vs;
    } else {
        if (p.radius <= pJS.particles.size.anim.size_min) p.size_status = true;
        p.radius -= p.vs;
    }
    if (p.radius < 0) p.radius = 0;
}

/* change particle position if it is out of canvas */
if (pJS.particles.move.out_mode == 'bounce') {
    var new_pos = {
        x_left: p.radius,
        x_right: pJS.canvas.w,
        y_top: p.radius,
        y_bottom: pJS.canvas.h
    }
} else {
    var new_pos = {
        x_left: -p.radius,
        x_right: pJS.canvas.w + p.radius,
        y_top: -p.radius,
        y_bottom: pJS.canvas.h + p.radius
    }
}

if (p.x - p.radius > pJS.canvas.w) {
    p.x = new_pos.x_left;
    p.y = Math.random() * pJS.canvas.h;
}
else if (p.x + p.radius < 0) {
    p.x = new_pos.x_right;
    p.y = Math.random() * pJS.canvas.h;
}
if (p.y - p.radius > pJS.canvas.h) {
    p.y = new_pos.y_top;
    p.x = Math.random() * pJS.canvas.w;
}
else if (p.y + p.radius < 0) {
    p.y = new_pos.y_bottom;
    p.x = Math.random() * pJS.canvas.w;
}

/* out of canvas modes */
switch (pJS.particles.move.out_mode) {
    case 'bounce':
        if (p.x + p.radius > pJS.canvas.w) p.vx = -p.vx;
        else if (p.x - p.radius < 0) p.vx = -p.vx;
        if (p.y + p.radius > pJS.canvas.h) p.vy = -p.vy;
        else if (p.y - p.radius < 0) p.vy = -p.vy;
        break;
}

/* events */
if (isInArray('grab', pJS.interactivity.events.onhover.mode)) {
    pJS.fn.modes.grabParticle(p);
}

if (isInArray('bubble', pJS.interactivity.events.onhover.mode) || isInArray('bubble', pJS.interactivity.events.onclick.mode)) {
    pJS.fn.modes.bubbleParticle(p);
}

if (isInArray('repulse', pJS.interactivity.events.onhover.mode) || isInArray('repulse', pJS.interactivity.events.onclick.mode)) {
    pJS.fn.modes.repulseParticle(p);
}

/* interaction auto between particles */
if (pJS.particles.line_linked.enable || pJS.particles.move.attract.enable) {
    for (var j = i + 1; j < pJS.particles.array.length; j++) {
        var p2 = pJS.particles.array[j];

        /* link particles */
        if (pJS.particles.line_linked.enable) {
            pJS.fn.interact.linkParticles(p, p2);
        }

        /* attract particles */
        if (pJS.particles.move.attract.enable) {
            pJS.fn.interact.attractParticles(p, p2);
        }

        /* bounce particles */
        if (pJS.particles.move.bounce) {
            pJS.fn.interact.bounceParticles(p, p2);
        }

    }
}


}

};

pJS.fn.particlesDraw = function () {

/* clear canvas */
pJS.canvas.ctx.clearRect(0, 0, pJS.canvas.w, pJS.canvas.h);

/* update each particles param */
pJS.fn.particlesUpdate();

/* draw each particle */
for (var i = 0; i < pJS.particles.array.length; i++) {
var p = pJS.particles.array[i];
p.draw();
}

};

pJS.fn.particlesEmpty = function () {
pJS.particles.array = [];
};

pJS.fn.particlesRefresh = function () {

/* init all */
cancelRequestAnimFrame(pJS.fn.checkAnimFrame);
cancelRequestAnimFrame(pJS.fn.drawAnimFrame);
pJS.tmp.source_svg = undefined;
pJS.tmp.img_obj = undefined;
pJS.tmp.count_svg = 0;
pJS.fn.particlesEmpty();
pJS.fn.canvasClear();

/* restart */
pJS.fn.vendors.start();

};


/* ---------- pJS functions - particles interaction ------------ */

pJS.fn.interact.linkParticles = function (p1, p2) {

var dx = p1.x - p2.x,
dy = p1.y - p2.y,
dist = Math.sqrt(dx * dx + dy * dy);

/* draw a line between p1 and p2 if the distance between them is under the config distance */
if (dist <= pJS.particles.line_linked.distance) {

var opacity_line = pJS.particles.line_linked.opacity - (dist / (1 / pJS.particles.line_linked.opacity)) / pJS.particles.line_linked.distance;

if (opacity_line > 0) {

    /* style */
    var color_line = pJS.particles.line_linked.color_rgb_line;
    pJS.canvas.ctx.strokeStyle = 'rgba(' + color_line.r + ',' + color_line.g + ',' + color_line.b + ',' + opacity_line + ')';
    pJS.canvas.ctx.lineWidth = pJS.particles.line_linked.width;
    //pJS.canvas.ctx.lineCap = 'round'; /* performance issue */

    /* path */
    pJS.canvas.ctx.beginPath();
    pJS.canvas.ctx.moveTo(p1.x, p1.y);
    pJS.canvas.ctx.lineTo(p2.x, p2.y);
    pJS.canvas.ctx.stroke();
    pJS.canvas.ctx.closePath();

}

}

};


pJS.fn.interact.attractParticles = function (p1, p2) {

/* condensed particles */
var dx = p1.x - p2.x,
dy = p1.y - p2.y,
dist = Math.sqrt(dx * dx + dy * dy);

if (dist <= pJS.particles.line_linked.distance) {

var ax = dx / (pJS.particles.move.attract.rotateX * 1000),
    ay = dy / (pJS.particles.move.attract.rotateY * 1000);

p1.vx -= ax;
p1.vy -= ay;

p2.vx += ax;
p2.vy += ay;

}


}


pJS.fn.interact.bounceParticles = function (p1, p2) {

var dx = p1.x - p2.x,
dy = p1.y - p2.y,
dist = Math.sqrt(dx * dx + dy * dy),
dist_p = p1.radius + p2.radius;

if (dist <= dist_p) {
p1.vx = -p1.vx;
p1.vy = -p1.vy;

p2.vx = -p2.vx;
p2.vy = -p2.vy;
}

}


/* ---------- pJS functions - modes events ------------ */

pJS.fn.modes.pushParticles = function (nb, pos) {

pJS.tmp.pushing = true;

for (var i = 0; i < nb; i++) {
pJS.particles.array.push(
    new pJS.fn.particle(
        pJS.particles.color,
        pJS.particles.opacity.value,
        {
            'x': pos ? pos.pos_x : Math.random() * pJS.canvas.w,
            'y': pos ? pos.pos_y : Math.random() * pJS.canvas.h
        }
    )
)
if (i == nb - 1) {
    if (!pJS.particles.move.enable) {
        pJS.fn.particlesDraw();
    }
    pJS.tmp.pushing = false;
}
}

};


pJS.fn.modes.removeParticles = function (nb) {

pJS.particles.array.splice(0, nb);
if (!pJS.particles.move.enable) {
pJS.fn.particlesDraw();
}

};


pJS.fn.modes.bubbleParticle = function (p) {

/* on hover event */
if (pJS.interactivity.events.onhover.enable && isInArray('bubble', pJS.interactivity.events.onhover.mode)) {

var dx_mouse = p.x - pJS.interactivity.mouse.pos_x,
    dy_mouse = p.y - pJS.interactivity.mouse.pos_y,
    dist_mouse = Math.sqrt(dx_mouse * dx_mouse + dy_mouse * dy_mouse),
    ratio = 1 - dist_mouse / pJS.interactivity.modes.bubble.distance;

function init() {
    p.opacity_bubble = p.opacity;
    p.radius_bubble = p.radius;
}

/* mousemove - check ratio */
if (dist_mouse <= pJS.interactivity.modes.bubble.distance) {

    if (ratio >= 0 && pJS.interactivity.status == 'mousemove') {

        /* size */
        if (pJS.interactivity.modes.bubble.size != pJS.particles.size.value) {

            if (pJS.interactivity.modes.bubble.size > pJS.particles.size.value) {
                var size = p.radius + (pJS.interactivity.modes.bubble.size * ratio);
                if (size >= 0) {
                    p.radius_bubble = size;
                }
            } else {
                var dif = p.radius - pJS.interactivity.modes.bubble.size,
                    size = p.radius - (dif * ratio);
                if (size > 0) {
                    p.radius_bubble = size;
                } else {
                    p.radius_bubble = 0;
                }
            }

        }

        /* opacity */
        if (pJS.interactivity.modes.bubble.opacity != pJS.particles.opacity.value) {

            if (pJS.interactivity.modes.bubble.opacity > pJS.particles.opacity.value) {
                var opacity = pJS.interactivity.modes.bubble.opacity * ratio;
                if (opacity > p.opacity && opacity <= pJS.interactivity.modes.bubble.opacity) {
                    p.opacity_bubble = opacity;
                }
            } else {
                var opacity = p.opacity - (pJS.particles.opacity.value - pJS.interactivity.modes.bubble.opacity) * ratio;
                if (opacity < p.opacity && opacity >= pJS.interactivity.modes.bubble.opacity) {
                    p.opacity_bubble = opacity;
                }
            }

        }

    }

} else {
    init();
}


/* mouseleave */
if (pJS.interactivity.status == 'mouseleave') {
    init();
}

}

/* on click event */
else if (pJS.interactivity.events.onclick.enable && isInArray('bubble', pJS.interactivity.events.onclick.mode)) {


if (pJS.tmp.bubble_clicking) {
    var dx_mouse = p.x - pJS.interactivity.mouse.click_pos_x,
        dy_mouse = p.y - pJS.interactivity.mouse.click_pos_y,
        dist_mouse = Math.sqrt(dx_mouse * dx_mouse + dy_mouse * dy_mouse),
        time_spent = (new Date().getTime() - pJS.interactivity.mouse.click_time) / 1000;

    if (time_spent > pJS.interactivity.modes.bubble.duration) {
        pJS.tmp.bubble_duration_end = true;
    }

    if (time_spent > pJS.interactivity.modes.bubble.duration * 2) {
        pJS.tmp.bubble_clicking = false;
        pJS.tmp.bubble_duration_end = false;
    }
}


function process(bubble_param, particles_param, p_obj_bubble, p_obj, id) {

    if (bubble_param != particles_param) {

        if (!pJS.tmp.bubble_duration_end) {
            if (dist_mouse <= pJS.interactivity.modes.bubble.distance) {
                if (p_obj_bubble != undefined) var obj = p_obj_bubble;
                else var obj = p_obj;
                if (obj != bubble_param) {
                    var value = p_obj - (time_spent * (p_obj - bubble_param) / pJS.interactivity.modes.bubble.duration);
                    if (id == 'size') p.radius_bubble = value;
                    if (id == 'opacity') p.opacity_bubble = value;
                }
            } else {
                if (id == 'size') p.radius_bubble = undefined;
                if (id == 'opacity') p.opacity_bubble = undefined;
            }
        } else {
            if (p_obj_bubble != undefined) {
                var value_tmp = p_obj - (time_spent * (p_obj - bubble_param) / pJS.interactivity.modes.bubble.duration),
                    dif = bubble_param - value_tmp;
                value = bubble_param + dif;
                if (id == 'size') p.radius_bubble = value;
                if (id == 'opacity') p.opacity_bubble = value;
            }
        }

    }

}

if (pJS.tmp.bubble_clicking) {
    /* size */
    process(pJS.interactivity.modes.bubble.size, pJS.particles.size.value, p.radius_bubble, p.radius, 'size');
    /* opacity */
    process(pJS.interactivity.modes.bubble.opacity, pJS.particles.opacity.value, p.opacity_bubble, p.opacity, 'opacity');
}

}

};


pJS.fn.modes.repulseParticle = function (p) {

if (pJS.interactivity.events.onhover.enable && isInArray('repulse', pJS.interactivity.events.onhover.mode) && pJS.interactivity.status == 'mousemove') {

var dx_mouse = p.x - pJS.interactivity.mouse.pos_x,
    dy_mouse = p.y - pJS.interactivity.mouse.pos_y,
    dist_mouse = Math.sqrt(dx_mouse * dx_mouse + dy_mouse * dy_mouse);

var normVec = { x: dx_mouse / dist_mouse, y: dy_mouse / dist_mouse },
    repulseRadius = pJS.interactivity.modes.repulse.distance,
    velocity = 100,
    repulseFactor = clamp((1 / repulseRadius) * (-1 * Math.pow(dist_mouse / repulseRadius, 2) + 1) * repulseRadius * velocity, 0, 50);

var pos = {
    x: p.x + normVec.x * repulseFactor,
    y: p.y + normVec.y * repulseFactor
}

if (pJS.particles.move.out_mode == 'bounce') {
    if (pos.x - p.radius > 0 && pos.x + p.radius < pJS.canvas.w) p.x = pos.x;
    if (pos.y - p.radius > 0 && pos.y + p.radius < pJS.canvas.h) p.y = pos.y;
} else {
    p.x = pos.x;
    p.y = pos.y;
}

}


else if (pJS.interactivity.events.onclick.enable && isInArray('repulse', pJS.interactivity.events.onclick.mode)) {

if (!pJS.tmp.repulse_finish) {
    pJS.tmp.repulse_count++;
    if (pJS.tmp.repulse_count == pJS.particles.array.length) {
        pJS.tmp.repulse_finish = true;
    }
}

if (pJS.tmp.repulse_clicking) {

    var repulseRadius = Math.pow(pJS.interactivity.modes.repulse.distance / 6, 3);

    var dx = pJS.interactivity.mouse.click_pos_x - p.x,
        dy = pJS.interactivity.mouse.click_pos_y - p.y,
        d = dx * dx + dy * dy;

    var force = -repulseRadius / d * 1;

    function process() {

        var f = Math.atan2(dy, dx);
        p.vx = force * Math.cos(f);
        p.vy = force * Math.sin(f);

        if (pJS.particles.move.out_mode == 'bounce') {
            var pos = {
                x: p.x + p.vx,
                y: p.y + p.vy
            }
            if (pos.x + p.radius > pJS.canvas.w) p.vx = -p.vx;
            else if (pos.x - p.radius < 0) p.vx = -p.vx;
            if (pos.y + p.radius > pJS.canvas.h) p.vy = -p.vy;
            else if (pos.y - p.radius < 0) p.vy = -p.vy;
        }

    }

    // default
    if (d <= repulseRadius) {
        process();
    }

    // bang - slow motion mode
    // if(!pJS.tmp.repulse_finish){
    //   if(d <= repulseRadius){
    //     process();
    //   }
    // }else{
    //   process();
    // }


} else {

    if (pJS.tmp.repulse_clicking == false) {

        p.vx = p.vx_i;
        p.vy = p.vy_i;

    }

}

}

}


pJS.fn.modes.grabParticle = function (p) {

if (pJS.interactivity.events.onhover.enable && pJS.interactivity.status == 'mousemove') {

var dx_mouse = p.x - pJS.interactivity.mouse.pos_x,
    dy_mouse = p.y - pJS.interactivity.mouse.pos_y,
    dist_mouse = Math.sqrt(dx_mouse * dx_mouse + dy_mouse * dy_mouse);

/* draw a line between the cursor and the particle if the distance between them is under the config distance */
if (dist_mouse <= pJS.interactivity.modes.grab.distance) {

    var opacity_line = pJS.interactivity.modes.grab.line_linked.opacity - (dist_mouse / (1 / pJS.interactivity.modes.grab.line_linked.opacity)) / pJS.interactivity.modes.grab.distance;

    if (opacity_line > 0) {

        /* style */
        var color_line = pJS.particles.line_linked.color_rgb_line;
        pJS.canvas.ctx.strokeStyle = 'rgba(' + color_line.r + ',' + color_line.g + ',' + color_line.b + ',' + opacity_line + ')';
        pJS.canvas.ctx.lineWidth = pJS.particles.line_linked.width;
        //pJS.canvas.ctx.lineCap = 'round'; /* performance issue */

        /* path */
        pJS.canvas.ctx.beginPath();
        pJS.canvas.ctx.moveTo(p.x, p.y);
        pJS.canvas.ctx.lineTo(pJS.interactivity.mouse.pos_x, pJS.interactivity.mouse.pos_y);
        pJS.canvas.ctx.stroke();
        pJS.canvas.ctx.closePath();

    }

}

}

};



/* ---------- pJS functions - vendors ------------ */

pJS.fn.vendors.eventsListeners = function () {

/* events target element */
if (pJS.interactivity.detect_on == 'window') {
pJS.interactivity.el = window;
} else {
pJS.interactivity.el = pJS.canvas.el;
}


/* detect mouse pos - on hover / click event */
if (pJS.interactivity.events.onhover.enable || pJS.interactivity.events.onclick.enable) {

/* el on mousemove */
pJS.interactivity.el.addEventListener('mousemove', function (e) {

    if (pJS.interactivity.el == window) {
        var pos_x = e.clientX,
            pos_y = e.clientY;
    }
    else {
        var pos_x = e.offsetX || e.clientX,
            pos_y = e.offsetY || e.clientY;
    }

    pJS.interactivity.mouse.pos_x = pos_x;
    pJS.interactivity.mouse.pos_y = pos_y;

    if (pJS.tmp.retina) {
        pJS.interactivity.mouse.pos_x *= pJS.canvas.pxratio;
        pJS.interactivity.mouse.pos_y *= pJS.canvas.pxratio;
    }

    pJS.interactivity.status = 'mousemove';

});

/* el on onmouseleave */
pJS.interactivity.el.addEventListener('mouseleave', function (e) {

    pJS.interactivity.mouse.pos_x = null;
    pJS.interactivity.mouse.pos_y = null;
    pJS.interactivity.status = 'mouseleave';

});

}

/* on click event */
if (pJS.interactivity.events.onclick.enable) {

pJS.interactivity.el.addEventListener('click', function () {

    pJS.interactivity.mouse.click_pos_x = pJS.interactivity.mouse.pos_x;
    pJS.interactivity.mouse.click_pos_y = pJS.interactivity.mouse.pos_y;
    pJS.interactivity.mouse.click_time = new Date().getTime();

    if (pJS.interactivity.events.onclick.enable) {

        switch (pJS.interactivity.events.onclick.mode) {

            case 'push':
                if (pJS.particles.move.enable) {
                    pJS.fn.modes.pushParticles(pJS.interactivity.modes.push.particles_nb, pJS.interactivity.mouse);
                } else {
                    if (pJS.interactivity.modes.push.particles_nb == 1) {
                        pJS.fn.modes.pushParticles(pJS.interactivity.modes.push.particles_nb, pJS.interactivity.mouse);
                    }
                    else if (pJS.interactivity.modes.push.particles_nb > 1) {
                        pJS.fn.modes.pushParticles(pJS.interactivity.modes.push.particles_nb);
                    }
                }
                break;

            case 'remove':
                pJS.fn.modes.removeParticles(pJS.interactivity.modes.remove.particles_nb);
                break;

            case 'bubble':
                pJS.tmp.bubble_clicking = true;
                break;

            case 'repulse':
                pJS.tmp.repulse_clicking = true;
                pJS.tmp.repulse_count = 0;
                pJS.tmp.repulse_finish = false;
                setTimeout(function () {
                    pJS.tmp.repulse_clicking = false;
                }, pJS.interactivity.modes.repulse.duration * 1000)
                break;

        }

    }

});

}


};

pJS.fn.vendors.densityAutoParticles = function () {

if (pJS.particles.number.density.enable) {

/* calc area */
var area = pJS.canvas.el.width * pJS.canvas.el.height / 1000;
if (pJS.tmp.retina) {
    area = area / (pJS.canvas.pxratio * 2);
}

/* calc number of particles based on density area */
var nb_particles = area * pJS.particles.number.value / pJS.particles.number.density.value_area;

/* add or remove X particles */
var missing_particles = pJS.particles.array.length - nb_particles;
if (missing_particles < 0) pJS.fn.modes.pushParticles(Math.abs(missing_particles));
else pJS.fn.modes.removeParticles(missing_particles);

}

};


pJS.fn.vendors.checkOverlap = function (p1, position) {
for (var i = 0; i < pJS.particles.array.length; i++) {
var p2 = pJS.particles.array[i];

var dx = p1.x - p2.x,
    dy = p1.y - p2.y,
    dist = Math.sqrt(dx * dx + dy * dy);

if (dist <= p1.radius + p2.radius) {
    p1.x = position ? position.x : Math.random() * pJS.canvas.w;
    p1.y = position ? position.y : Math.random() * pJS.canvas.h;
    pJS.fn.vendors.checkOverlap(p1);
}
}
};


pJS.fn.vendors.createSvgImg = function (p) {

/* set color to svg element */
var svgXml = pJS.tmp.source_svg,
rgbHex = /#([0-9A-F]{3,6})/gi,
coloredSvgXml = svgXml.replace(rgbHex, function (m, r, g, b) {
    if (p.color.rgb) {
        var color_value = 'rgba(' + p.color.rgb.r + ',' + p.color.rgb.g + ',' + p.color.rgb.b + ',' + p.opacity + ')';
    } else {
        var color_value = 'hsla(' + p.color.hsl.h + ',' + p.color.hsl.s + '%,' + p.color.hsl.l + '%,' + p.opacity + ')';
    }
    return color_value;
});

/* prepare to create img with colored svg */
var svg = new Blob([coloredSvgXml], { type: 'image/svg+xml;charset=utf-8' }),
DOMURL = window.URL || window.webkitURL || window,
url = DOMURL.createObjectURL(svg);

/* create particle img obj */
var img = new Image();
img.addEventListener('load', function () {
p.img.obj = img;
p.img.loaded = true;
DOMURL.revokeObjectURL(url);
pJS.tmp.count_svg++;
});
img.src = url;

};


pJS.fn.vendors.destroypJS = function () {
cancelAnimationFrame(pJS.fn.drawAnimFrame);
canvas_el.remove();
pJSDom = null;
};


pJS.fn.vendors.drawShape = function (c, startX, startY, sideLength, sideCountNumerator, sideCountDenominator) {

// By Programming Thomas - https://programmingthomas.wordpress.com/2013/04/03/n-sided-shapes/
var sideCount = sideCountNumerator * sideCountDenominator;
var decimalSides = sideCountNumerator / sideCountDenominator;
var interiorAngleDegrees = (180 * (decimalSides - 2)) / decimalSides;
var interiorAngle = Math.PI - Math.PI * interiorAngleDegrees / 180; // convert to radians
c.save();
c.beginPath();
c.translate(startX, startY);
c.moveTo(0, 0);
for (var i = 0; i < sideCount; i++) {
c.lineTo(sideLength, 0);
c.translate(sideLength, 0);
c.rotate(interiorAngle);
}
//c.stroke();
c.fill();
c.restore();

};

pJS.fn.vendors.exportImg = function () {
window.open(pJS.canvas.el.toDataURL('image/png'), '_blank');
};


pJS.fn.vendors.loadImg = function (type) {

pJS.tmp.img_error = undefined;

if (pJS.particles.shape.image.src != '') {

if (type == 'svg') {

    var xhr = new XMLHttpRequest();
    xhr.open('GET', pJS.particles.shape.image.src);
    xhr.onreadystatechange = function (data) {
        if (xhr.readyState == 4) {
            if (xhr.status == 200) {
                pJS.tmp.source_svg = data.currentTarget.response;
                pJS.fn.vendors.checkBeforeDraw();
            } else {
                console.log('Error pJS - Image not found');
                pJS.tmp.img_error = true;
            }
        }
    }
    xhr.send();

} else {

    var img = new Image();
    img.addEventListener('load', function () {
        pJS.tmp.img_obj = img;
        pJS.fn.vendors.checkBeforeDraw();
    });
    img.src = pJS.particles.shape.image.src;

}

} else {
console.log('Error pJS - No image.src');
pJS.tmp.img_error = true;
}

};


pJS.fn.vendors.draw = function () {

if (pJS.particles.shape.type == 'image') {

if (pJS.tmp.img_type == 'svg') {

    if (pJS.tmp.count_svg >= pJS.particles.number.value) {
        pJS.fn.particlesDraw();
        if (!pJS.particles.move.enable) cancelRequestAnimFrame(pJS.fn.drawAnimFrame);
        else pJS.fn.drawAnimFrame = requestAnimFrame(pJS.fn.vendors.draw);
    } else {
        //console.log('still loading...');
        if (!pJS.tmp.img_error) pJS.fn.drawAnimFrame = requestAnimFrame(pJS.fn.vendors.draw);
    }

} else {

    if (pJS.tmp.img_obj != undefined) {
        pJS.fn.particlesDraw();
        if (!pJS.particles.move.enable) cancelRequestAnimFrame(pJS.fn.drawAnimFrame);
        else pJS.fn.drawAnimFrame = requestAnimFrame(pJS.fn.vendors.draw);
    } else {
        if (!pJS.tmp.img_error) pJS.fn.drawAnimFrame = requestAnimFrame(pJS.fn.vendors.draw);
    }

}

} else {
pJS.fn.particlesDraw();
if (!pJS.particles.move.enable) cancelRequestAnimFrame(pJS.fn.drawAnimFrame);
else pJS.fn.drawAnimFrame = requestAnimFrame(pJS.fn.vendors.draw);
}

};


pJS.fn.vendors.checkBeforeDraw = function () {

// if shape is image
if (pJS.particles.shape.type == 'image') {

if (pJS.tmp.img_type == 'svg' && pJS.tmp.source_svg == undefined) {
    pJS.tmp.checkAnimFrame = requestAnimFrame(check);
} else {
    //console.log('images loaded! cancel check');
    cancelRequestAnimFrame(pJS.tmp.checkAnimFrame);
    if (!pJS.tmp.img_error) {
        pJS.fn.vendors.init();
        pJS.fn.vendors.draw();
    }

}

} else {
pJS.fn.vendors.init();
pJS.fn.vendors.draw();
}

};


pJS.fn.vendors.init = function () {

/* init canvas + particles */
pJS.fn.retinaInit();
pJS.fn.canvasInit();
pJS.fn.canvasSize();
pJS.fn.canvasPaint();
pJS.fn.particlesCreate();
pJS.fn.vendors.densityAutoParticles();

/* particles.line_linked - convert hex colors to rgb */
pJS.particles.line_linked.color_rgb_line = hexToRgb(pJS.particles.line_linked.color);

};


pJS.fn.vendors.start = function () {

if (isInArray('image', pJS.particles.shape.type)) {
pJS.tmp.img_type = pJS.particles.shape.image.src.substr(pJS.particles.shape.image.src.length - 3);
pJS.fn.vendors.loadImg(pJS.tmp.img_type);
} else {
pJS.fn.vendors.checkBeforeDraw();
}

};




/* ---------- pJS - start ------------ */


pJS.fn.vendors.eventsListeners();

pJS.fn.vendors.start();



};

/* ---------- global functions - vendors ------------ */

Object.deepExtend = function (destination, source) {
for (var property in source) {
if (source[property] && source[property].constructor &&
source[property].constructor === Object) {
destination[property] = destination[property] || {};
arguments.callee(destination[property], source[property]);
} else {
destination[property] = source[property];
}
}
return destination;
};

window.requestAnimFrame = (function () {
return window.requestAnimationFrame ||
window.webkitRequestAnimationFrame ||
window.mozRequestAnimationFrame ||
window.oRequestAnimationFrame ||
window.msRequestAnimationFrame ||
function (callback) {
window.setTimeout(callback, 1000 / 60);
};
})();

window.cancelRequestAnimFrame = (function () {
return window.cancelAnimationFrame ||
window.webkitCancelRequestAnimationFrame ||
window.mozCancelRequestAnimationFrame ||
window.oCancelRequestAnimationFrame ||
window.msCancelRequestAnimationFrame ||
clearTimeout
})();

function hexToRgb(hex) {
// By Tim Down - http://stackoverflow.com/a/5624139/3493650
// Expand shorthand form (e.g. "03F") to full form (e.g. "0033FF")
var shorthandRegex = /^#?([a-f\d])([a-f\d])([a-f\d])$/i;
hex = hex.replace(shorthandRegex, function (m, r, g, b) {
return r + r + g + g + b + b;
});
var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
return result ? {
r: parseInt(result[1], 16),
g: parseInt(result[2], 16),
b: parseInt(result[3], 16)
} : null;
};

function clamp(number, min, max) {
return Math.min(Math.max(number, min), max);
};

function isInArray(value, array) {
return array.indexOf(value) > -1;
}


/* ---------- particles.js functions - start ------------ */

window.pJSDom = [];

window.particlesJS = function (tag_id, params) {

//console.log(params);

/* no string id? so it's object params, and set the id with default id */
if (typeof (tag_id) != 'string') {
params = tag_id;
tag_id = 'particles-js';
}

/* no id? set the id to default id */
if (!tag_id) {
tag_id = 'particles-js';
}

/* pJS elements */
var pJS_tag = document.getElementById(tag_id),
pJS_canvas_class = 'particles-js-canvas-el',
exist_canvas = pJS_tag.getElementsByClassName(pJS_canvas_class);

/* remove canvas if exists into the pJS target tag */
if (exist_canvas.length) {
while (exist_canvas.length > 0) {
pJS_tag.removeChild(exist_canvas[0]);
}
}

/* create canvas element */
var canvas_el = document.createElement('canvas');
canvas_el.className = pJS_canvas_class;

/* set size canvas */
canvas_el.style.width = "100%";
canvas_el.style.height = "100%";

/* append canvas */
var canvas = document.getElementById(tag_id).appendChild(canvas_el);

/* launch particle.js */
if (canvas != null) {
pJSDom.push(new pJS(tag_id, params));
}

};

window.particlesJS.load = function (tag_id, path_config_json, callback) {

/* load json config */
var xhr = new XMLHttpRequest();
xhr.open('GET', path_config_json);
xhr.onreadystatechange = function (data) {
if (xhr.readyState == 4) {
if (xhr.status == 200) {
    var params = JSON.parse(data.currentTarget.response);
    window.particlesJS(tag_id, params);
    if (callback) callback();
} else {
    console.log('Error pJS - XMLHttpRequest status: ' + xhr.status);
    console.log('Error pJS - File config not found');
}
}
};
xhr.send();

};